TCPIPCommConnect.h

//*****************************************************************************
// project   : ANALYTICA Class Library
// part      : Communication class for simple TCP/IP
// file name : TCPIPCommConnect.h
// version   : $revision:$
// author    : Udo Weber
// platform  : MS VC++ 6.0
//
//-----------------------------------------------------------------------------
// Description:
// =============
// implementation of the class CTCPIPComm to encapsulate simple TCP/IP
// communications
// Part : Connection establishment
//
//-----------------------------------------------------------------------------
// Revisionhistory:
// $Log: TCPIPCommConnect.h,v $
// Revision 1.4  2001/08/23 11:21:33  AxelSchmidt
// neue Funktion ConvToInAddr(
//
// Revision 1.3  2001/08/21 06:51:17  AxelSchmidt
// Zugriffsfunktion auf native Remotepartner hinzugefuegt
//
// Revision 1.2  2001/07/12 14:35:59  AxelSchmidt
// virtuelle Basis-Klasse CTraceObject hinzugefügt
//
// 20.07.1998 UWe  Some bug fixes
// 20.04.1998 UWe  first version
//*****************************************************************************

#ifndef _TCPIPCommConnect_h
#define _TCPIPCommConnect_h

//---- includes ---------------------------------------------------------------

#include <winsock.h>
#include "TraceObject.h"


//---- defines/const ----------------------------------------------------------


//---- enums ------------------------------------------------------------------


//---- structs ----------------------------------------------------------------


//---- classes ----------------------------------------------------------------

class CTCPIPCommConnect : virtual public CTraceObject
{
   // public part
public:

   CTCPIPCommConnect();

   virtual ~CTCPIPCommConnect();


   //
   // public operations
   //

   void Initialize( const short        TCPport,
                    const char         *pIPAddress,
                    const bool         PassiveConnection = false );

   bool ConnectRequest( SOCKET   PassiveSocket );


   bool DisconnectRequest( void );


   int GetLastSocketError( void ) const;

   bool Terminating( void ) const;

   SOCKET GetSocket( void );

   unsigned long GetRemoteIPAddr   ( void );
   
   struct in_addr ConvToInAddr( unsigned long nIPAddress ) const;

   const SOCKADDR_IN & GetRemoteAddr( void );

   SOCKADDR_IN ConvTCPAddrToSocketAddr( const short   TCPport,
                                        const char    *pIPAddr );


   // protected part
protected:

   //
   // virtual callback functions
   //

   virtual void ConInd( void ) = 0;

   virtual void DisInd( void ) = 0;



   // private part
private:

   bool AwaitConnection( void );

   bool EstablishConnection( void );


   //
   // static member functions
   //
   static void ConnectThread( CTCPIPCommConnect *pClass );

   

   // member definition
   SOCKET          m_Socket;
   SOCKET          m_PassiveSocket;
   SOCKADDR_IN     m_RemoteAddr;
   bool            m_PassiveConnection;
   int             m_LastSocketError;

   DWORD           m_ThreadID;

   HANDLE          m_ThreadHandle;
   HANDLE          m_hEventTerminate;
   HANDLE          m_hEventTerminateFinished;
   HANDLE          m_hEventConnecting;

   unsigned long   m_RemoteIPAddr;

   bool            m_Terminating;
};


//
// inline operations 
//

// get last socket error
inline int CTCPIPCommConnect::GetLastSocketError( void ) const
{
   return m_LastSocketError;
}


inline bool CTCPIPCommConnect::Terminating( void ) const
{
   return m_Terminating;
}


// get socket of established connection
inline SOCKET CTCPIPCommConnect::GetSocket( void )
{
   return m_Socket;
}


// get IP Address of connected (remmote) partner
inline unsigned long CTCPIPCommConnect::GetRemoteIPAddr( void )
{
   return m_RemoteIPAddr;
}

inline  const SOCKADDR_IN & CTCPIPCommConnect::GetRemoteAddr( void )
{
   return m_RemoteAddr;
}


#endif // _TCPIPCommConnect_h

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